How to join guttering

One problem many homeowners face is leaking gutters. This can be due to the way that the lengths of guttering have been connected. Ensuring all lengths of guttering are joined correctly guards against any future potential leaks. We highly recommend that property owners enlist the help of a professional tradesperson for work on guttering systems. This is primarily due to a concern with safety. Guttering is often at above-ground level and work on guttering should not be attempted unless the correct safety precautions have been taken.

How to join guttering – UPVC

When considering how to join guttering, here are some of the things a professional tradesperson can help with:

Guttering can be made from a variety of different materials, which includes steel, cast iron and aluminium. Existing guttering on the majority of households in the UK is made from UPVC. This is often the preferred type of guttering due to its cost, but also it is lightweight, simple to fit and requires little maintenance.

Guttering is supplied in standard lengths, normally 2 meters, 3 meters or 4 meters. UPVC guttering is cut to the length needed by using a fine-toothed hand saw.

Joint brackets (or union brackets) must be used on a long run where there are guttering lengths which need to be joined.

What are joint brackets or ‘union brackets’?

Joint brackets are wide support clips with rubber gaskets that create a watertight joint.

If you are replacing a joint, you should replace the whole fitting, never just the seal. Many joint brackets are interchangeable, however, you will need to check compatibility with your gutter system. Contact our helpline if you are unsure about this.

How should joint brackets be positioned?

A joint bracket should be positioned at every junction of two gutter sections. Make certain that the bracket is secured using all screw holes provided. It is important to adhere to the manufacturers installation instructions as these will advise where an ‘expansion gap’ is required. An expansion gap is needed in order to allow for the movement in the system. Movement takes place when the plastic expands and contracts due to changes in external temperature. The recommended size of an expansion gap can vary. Variation is down to make and type of guttering, but you may even find that the manufacturer recommends a different size of expansion gap depending on the type of weather in which the guttering is being joined. Hence, following the manufacturer’s installation advice is essential.

Joining guttering – other materials

On a cast iron or aluminium system there will be fixing straps which will be used to help strength the connection, but the use of sealant is also recommended to fully insure that the system is watertight.

If you require any extra assistance on how to join guttering or any other guttering questions, then give our experts a call on 01752 692 221 who will be happy to help.